/Engine/Source/Runtime/Engine/Public/Rendering/NaniteCoarseMeshStreamingManager.h
Add the used streaming handles used by a single FSceneRenderer - called on RenderThread
void AddUsedStreamingHandles ( [TArray](API\Runtime\Core\Containers\TArray)< [CoarseMeshStreamingHandle](API\Runtime\Engine\CoarseMeshStreamingHandle) > & UsedHandles )